/*!	 layer_shape.h
**	 Header file for implementation of the "Shape" layer
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2007-2008 Chris Moore
**	Copyright (c) 2012-2013 Carlos López
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifndef __SYNFIG_LAYER_SHAPE_H
#define __SYNFIG_LAYER_SHAPE_H

#include "layer_composite.h"
#include <synfig/color.h>
#include <synfig/vector.h>
#include <synfig/blur.h>

#include <synfig/rendering/primitive/contour.h>

#include <vector>

namespace synfig
{

/*!	\class Layer_Shape
**	 writeme			*/
class Layer_Shape : public Layer_Composite, public Layer_NoDeform
{
    SYNFIG_LAYER_MODULE_EXT

protected:
    // Parameter: (Color) Color of the shape
    ValueBase   param_color;
    // Parameter: (Point) Origin of the shape definition
    ValueBase   param_origin;
    // Parameter: (bool) Whether the shape is inverted or not
    ValueBase   param_invert;
    // Parameter: (bool) Whether the shape has antialiased edge
    ValueBase   param_antialias;
    // Parameter: (Blur::Type) The type of blur used for the feather
    ValueBase   param_blurtype;
    // Parameter: (Real) Amount of feather of the shape
    ValueBase   param_feather;
    // Parameter: (WindingStyle) How shape is rendered when crosses it self
    ValueBase	param_winding_style;

private:
    // internal caching
    struct Intersector;
    Intersector	*edge_table;
    rendering::Contour::Handle contour;
    Vector feather;

    mutable Time last_sync_time;
    mutable Real last_sync_outline_grow;

protected:
    Layer_Shape(const Real &a = 1.0, const Color::BlendMethod m = Color::BLEND_COMPOSITE);

public:

    ~Layer_Shape();

protected:
    // Clears out any data
    /*!	Also clears out the Intersector
    */
    void clear();
    void move_to(Real x, Real y);
    void line_to(Real x, Real y);
    void conic_to(Real x, Real y, Real x1, Real y1);
    void cubic_to(Real x, Real y, Real x1, Real y1, Real x2, Real y2);
    void close();

    Vector get_feather() const
    {
        return feather;
    }
    void set_feather(const Vector &x)
    {
        feather = x;
    }

public:
    void sync(bool force = false) const;
    void force_sync() const
    {
        sync(true);
    }

    virtual bool set_shape_param(const String & param, const synfig::ValueBase &value);
    virtual bool set_param(const String & param, const synfig::ValueBase &value);
    virtual ValueBase get_param(const String & param)const;

    virtual Vocab get_param_vocab()const;

    virtual Color get_color(Context context, const Point &pos)const;
    virtual bool accelerated_render(Context context, Surface *surface, int quality, const RendDesc &renddesc, ProgressCallback *cb)const;
    virtual synfig::Layer::Handle hit_check(synfig::Context context, const synfig::Point &point)const;
    virtual Rect get_bounding_rect()const;

protected:
    virtual void sync_vfunc();
    virtual void set_time_vfunc(IndependentContext context, Time time)const;
    virtual rendering::Task::Handle build_composite_task_vfunc(ContextParams context_params)const;

private:
    bool render_shape(Surface *surface, bool useblend, const RendDesc &renddesc) const;
}; // END of Layer_Shape

}; // END of namespace synfig

#endif